Mobile SQL Customer Data Manager

I need to organise all of my customer information in a structured SQL database and give my team a simple way to add or update those records directly from their phones. The core of the job is two-fold: first, design and deploy a clean relational schema that captures names, contacts, addresses, notes and whatever other standard customer fields you would normally expect; second, build a mobile interface that lets users create, read, update and delete those records through straightforward forms.

The mobile side can be cross-platform in Flutter or React Native, or native Android if that is faster for you—what matters most is that it connects securely to the database, validates input, and presents a searchable list of existing customers. No CSV imports or external APIs this time; everything will be keyed in manually, so performance and field-level validation are important.

I will need the finished .sql file (or migration scripts), full app source code, and short deployment notes so I can spin everything up again on my own server. Once I can open the app, create a customer, edit it, delete it and see the change reflected in the database, we are done.